Three-dimensional numerical simulation of non-newtonian blood in two coronary stents
Three-dimensional numerical simulation of non-newtonian blood in two coronary stents
The objective of the present study is to carry out CFD simulations in a realistic 3D geometry of two coronary stents in physiological conditions and to assess the influence of the non-Newtonian behavior of blood, modeled as Casson fluid. The stents used are made of 12 rings and are similar to real coronary ones. Artery is modeled as a cylinder with rigid walls and the blood is assumed as incompressible non-Newtonian fluid in laminar flow. A commercial computational fluid dynamic code is used with a mesh composed of non uniform tetrahedrons. The simulations are performed in steady and unsteady state. Wall Shear Stress, as well as its time variations and the non-Newtonian behavior, are investigated in unsteady state. Results suggest that the Newtonian behavior is leading to an overestimation of the restenosis percent.
109-114
The American Society of Mechanical Engineers
Gori, F.
f7e76614-37d8-4c3b-b7b0-8c6603a4515f
Boghi, A.
54a72da6-c8a2-468c-9773-897efac0638f
2010
Gori, F.
f7e76614-37d8-4c3b-b7b0-8c6603a4515f
Boghi, A.
54a72da6-c8a2-468c-9773-897efac0638f
Gori, F. and Boghi, A.
(2010)
Three-dimensional numerical simulation of non-newtonian blood in two coronary stents.
In 2010 14th International Heat Transfer Conference, IHTC 14.
vol. 1,
The American Society of Mechanical Engineers.
.
(doi:10.1115/IHTC14-23087).
Record type:
Conference or Workshop Item
(Paper)
Abstract
The objective of the present study is to carry out CFD simulations in a realistic 3D geometry of two coronary stents in physiological conditions and to assess the influence of the non-Newtonian behavior of blood, modeled as Casson fluid. The stents used are made of 12 rings and are similar to real coronary ones. Artery is modeled as a cylinder with rigid walls and the blood is assumed as incompressible non-Newtonian fluid in laminar flow. A commercial computational fluid dynamic code is used with a mesh composed of non uniform tetrahedrons. The simulations are performed in steady and unsteady state. Wall Shear Stress, as well as its time variations and the non-Newtonian behavior, are investigated in unsteady state. Results suggest that the Newtonian behavior is leading to an overestimation of the restenosis percent.
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Published date: 2010
Venue - Dates:
2010 14th International Heat Transfer Conference, IHTC 14, , Washington, DC, United States, 2010-08-08 - 2010-08-13
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Local EPrints ID: 421748
URI: http://eprints.soton.ac.uk/id/eprint/421748
PURE UUID: 860a5d36-411c-4118-8e34-cb27b5545961
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Date deposited: 26 Jun 2018 16:30
Last modified: 15 Mar 2024 20:21
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Author:
F. Gori
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